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Nov 10, 2021Open Access
The Michelson-Morley Experiment (MMX) tried to prove the existence of ether, but they did not observe the movement of interference fringes, which led to the assumption that the speed of light is constant in the inertial reference frame, which is also the theoretical basis of Einstein’s special relativity (SR). So are there other possibilities that caused the experiment to fail? The Laser Interferometer Gravitational-Wave Observatory (LIGO) has observed gravitational waves, which opens up researc...
Feb 17, 2020Open Access
In the recent, filler-polymer composites researches have been on the rise due to its implication to electromagnetic interference (EMI) applications. The composition, morphology and surface rheology of the filler-polymer composites play an immense role in determining the electrical, mechanical, and optical properties. In this paper, the preparation and characterization of micro-composites of wood (biodegradable waste material)/polycaprolactone (PCL) composites a ...
Jan 25, 2019Open Access
The success of a design of a machine manufacturing line is directly related to the efficiency in the use of raw material and components, requiring a total control of the process. In this work the numerical simulation was applied to analyze the conduction of heat transferred in the Edge gluing machine Smc1 and to validate the simulations with the temperature differences collected experimentally. These validations were performed wit ...
Aug 20, 2018Open Access
Thin films of Zn100-xCdxO with
x = 0, 2, 4, 6 and 8 at% were deposited by electron
beam evaporation technique on glass substrates. The structural, optical and
electrical properties of Zn100-xCdxO films with x = 4 at%
have been investigate ...
Mar 27, 2018Open Access
The motional EMF in segments of the copper wire with
magnetic shielding is found according to the voltage lack in two coils with
partial shielding moving relative to the magnetic field lines. The first coil
moved across the Earth’s
magnetic field lines. The second one was located near the end face of the
rotating disk magnet with an axial magnetization. Permalloy foil wound around a
part of turns containing w ...
Feb 12, 2018Open Access
In several areas of
engineering, it is
possible to put real problems in mathematical functions; when we represent a problem with variables in the
form of function, we were
able to extract various information from it. This paper compared two different
mathematical methods, being the finite difference method and the Fourth Order
Range-Kutta method, to analyze the concentration and temperature of ...
Dec 15, 2017Open Access
In the review we obtained a strict solution of problem of the sound diffraction by an elastic spheroidal shell, located near the interface of a liquid medium with an elastic solid medium. Calculation of the scattered sound field for ideal bodies (a spheroid and an elliptical cylinder) is performed. These bodies are placed on the interface between the liquid and the ideal medium; it is shown, that the main role is played not ...
Aug 04, 2016Open Access
Instrumental observations of the Venus transit on June 6, 2012 were performed using two similar torsinds—a
special kind of ultralight torsion balances on a silk suspension. A clear
response of both devices to this phenomenon was registered. The observations
have verified a theoretical assumption on existence of the Spiral Vortex Solar
Radiation (SVSR). The direct measurements of a space veloci ...
Nov 27, 2015Open Access
This paper reports the optical properties of prepared samarium oxide Sm 2O 3 thin films nanoparticles using RF sputtering technique. X-ray diffraction is
used to examine and characterize the prepared films. Optical measurements are
carried out by employing U-V-Visible spectroscopy to study optoelectronic properties
of Sm 2O 3 thin films. These films
are highly transparent in the visible range. The average value of the optical
gap belonging to the thin...
Dec 24, 2014Open Access
The focus of this paper is to develop a thermoelectric module for
low-voltage loads that will satisfy the electrical use and stored charges in
the improvised power bank that can be used by the students and the faculty in
everyday life or even in emergency. This project will benefit the BIT and COE
students of the Bulacan State University, and the professionals: drafters,
architects, engineers or even hikers, adventure seekers and future researchers.
The thermoelectric module is composed for low-...
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